🧬ap biology review

P53 Protein

Written by the Fiveable Content Team • Last updated September 2025
Verified for the 2026 exam
Verified for the 2026 examWritten by the Fiveable Content Team • Last updated September 2025

Definition

The p53 protein is a crucial regulator that prevents cancer formation. It promotes cell cycle arrest and apoptosis in response to DNA damage.

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